Church of Four Crowned Martyrs

Santi Quattro Coronati is an ancient basilica in Rome, Italy. The church dates back to the fourth or fifth century, and is devoted to four anonymous saints and martyrs. The complex of the basilica with its two courtyards, the fortified Cardinal Palace with the Saint Silvester Chapel, and the monastery with its cosmatesque cloister is built in a silent and green part of Rome, between the Colosseum and San Giovanni in Laterano, in an out-of-time setting.

Source: Wikipedia